With billions of supplies, it thrived in the 1970s

The days passed in an orderly manner.

The temperature also rose in an orderly manner.

The sunshine of August made us realize that this was probably a summer contracted by the Huoyan Mountain.

There was no trouble with seasonal changes in the space, but no matter what, I had to stay outside for eight or nine hours every day. Especially the naughty children, dogs, rabbits and two old hens at home seemed to have lost their tempers due to the heat.

I once thought that I had just crossed over, or maybe I encountered a hot summer. I asked Ah Zhan in a roundabout way and found out that it was like this every year, and it would pass if I endured it.

That's right, in this era, except for the fan, there were no other electric fans and air conditioners in the future.

Miss Jun's tsundere attribute was online. Hey, can such a small thing be difficult for me. As soon as the idea came out in the space, I decisively searched for"saltpeter" in the mall.

The omnipotent mall has never disappointed me except that it was a little dark when recycling items.

A piece of saltpeter about the size of a palm only requires one point. Quickly exchanged for 3,000 pieces.

What is this for? ? ? You can learn about the method of making ice with saltpeter. The simple application principle is: when saltpeter dissolves in water, it will absorb a lot of heat and cool the surrounding water until it freezes.

But because there used to be refrigerators, this method of making ice has no room for development in most cases. Perhaps the most frequently mentioned opportunity is the chemistry class in school, making ice with potassium nitrate.

Put the saltpeter in several wooden boxes, go out of the space and go down to the basement of the utility room, put the boxes out one by one, and then put them neatly.

There are also more than a dozen wooden basins of different sizes taken out of the space.

When Jun Qingqing came out of the utility room again, she was holding three larger and several smaller wooden basins and a large bag of saltpeter.

Ah Zhan heard the noise outside and came out of the guest room listlessly, and saw Sister Jun taking out a bunch of things from the utility room.

Out of curiosity, he didn't rush back to the house. As a result, magical things happened in the next period of time.

Sister Jun first cleaned the three small wooden basins with water, and then put some unknown things into the three large wooden basins.

Even though they didn't know what these things that looked a bit like glass were, it didn't stop the children from watching the fun.

Sister Jun explained what the stone was made of, and then said: Pour clean water in a ratio of one to three.

After doing this, a smaller wooden basin was placed in the middle of each large basin, but the small basins did not contain the strange things.

As time passed, the water in the large basins began to be covered with a thin layer of ice, and slowly the ice became thicker and thicker.

At this time, Ah Zhan couldn't keep calm at all.

"Wow, sister Jun, you are simply the most amazing person."

Jun Qingqing replied with a smile,"Bring an ice basin to your room. This ice cannot be eaten. It is placed in the room to cool you down. After the ice in the large basin solidifies, we will wash some fruits and cut half a watermelon and put it in the small basin. We will have chilled fruits to eat in a while.

Sister Jun will make some mung bean soup later. After it is cooked and cooled, we can also put it in the small basin and make it into ice. There are many other ways to eat it, and sister Jun will slowly show you how to do it. But we can't be greedy for the coolness. You should eat as much as we give you, and you can't eat more secretly. If you are discovered, the delicious food will be taken away."

The little guy quickly expressed his attitude and absolutely followed sister Jun's requirements strictly.

"Now we have three basins of ice, one in each of our rooms. There is another basin for Dahei and Erhei in the outer room."

As for the chickens and rabbits outside, oh, they have been holding on.

At around four o'clock in the afternoon, Jun Qingqing went out and visited the cave. He bought another 700 pieces of saltpeter and divided them into two boxes and placed them in the cave. There were also six large wooden basins and six small wooden basins.

Since finding this cave, if there is anything for the old people that is not convenient to bring over, it will be placed in the cave in advance. The explanation to both sides is that they found it little by little from the black market, and only transported it to the cave when they had enough.

That night when I went to my grandfather's place, I specially put the iced fruits in a basket and wrapped a few ice cubes in cloth to ensure that the fruits would still be iced when the old people and the two uncles ate them after dinner. At the same time In addition to dinner, there were two more army green kettles in the schoolbag, which of course contained iced mung bean soup.

After the elders finished their meal, Jun Qingqing took the basket and handed the fruits to them. The shock on their faces was definitely not fake.

The little girl was very proud of her accomplishment and giggled for a long time.

After laughing, she told everyone that there was more than that. There was saltpeter and a basin for making ice in the cave in the back mountain. The method and operation steps were explained in detail, and it was specifically mentioned that the two sides were prepared. Don't take the wrong one. There was a note on the box of saltpeter to distinguish them. The main reason was that there were more people here and the amount of saltpeter prepared was more than that of Grandpa Bai.

But feel free to use it, there is still a lot at home. Don't worry about not having enough.